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400 lines
13 KiB
HTML
Vendored
400 lines
13 KiB
HTML
Vendored
<!doctype html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=1920, height=1080" />
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<title>Pill Karaoke</title>
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<link rel="preconnect" href="https://fonts.googleapis.com" />
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<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
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<link
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href="https://fonts.googleapis.com/css2?family=Poppins:wght@700&display=swap"
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rel="stylesheet"
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/>
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<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
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<style>
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*,
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*::before,
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*::after {
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box-sizing: border-box;
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}
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html,
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body {
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width: 1920px;
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height: 1080px;
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margin: 0;
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overflow: hidden;
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background: #000000;
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font-family: "Poppins", Arial, sans-serif;
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}
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#pill-karaoke {
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position: relative;
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width: 1920px;
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height: 1080px;
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overflow: hidden;
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background: #000000;
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}
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#avatar-video {
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position: absolute;
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inset: 0;
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z-index: 1;
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width: 100%;
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height: 100%;
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object-fit: cover;
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}
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.caption-layer {
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position: absolute;
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inset: 0;
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z-index: 20;
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pointer-events: none;
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transform: translateZ(0);
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}
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.safe-zone {
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position: absolute;
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bottom: 100px;
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left: 50%;
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transform: translateX(-50%);
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width: 1600px;
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height: 220px;
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display: flex;
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align-items: center;
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justify-content: center;
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}
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.caption-group {
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position: absolute;
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left: 0;
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top: 0;
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width: 1600px;
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height: 220px;
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display: flex;
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align-items: center;
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justify-content: center;
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opacity: 0;
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}
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.caption-pill {
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width: auto;
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max-width: 1600px;
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padding: 18px 60px 20px;
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border-radius: 22px;
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background: #e7e5e7;
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box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
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text-align: center;
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overflow: visible;
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}
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.caption-copy {
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display: flex;
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flex-direction: column;
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align-items: center;
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justify-content: center;
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width: 100%;
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color: #a6a6a6;
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font-family: "Poppins", Arial, sans-serif;
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font-size: 72px;
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font-weight: 700;
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line-height: 1.16;
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letter-spacing: 0;
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white-space: nowrap;
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word-break: normal;
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overflow: visible;
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}
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.caption-line {
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display: flex;
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justify-content: center;
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gap: 16px;
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width: 100%;
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max-width: none;
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line-height: 1.16;
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white-space: nowrap;
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overflow: visible;
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}
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.caption-word {
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display: inline-block;
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color: #a6a6a6;
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}
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</style>
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</head>
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<body>
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<div
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id="pill-karaoke"
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data-composition-id="caption-pill-karaoke"
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data-start="0"
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data-duration="8"
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data-fps="30"
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data-width="1920"
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data-height="1080"
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>
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<video
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id="avatar-video"
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muted
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playsinline
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data-start="0"
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data-duration="8"
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data-track-index="0"
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data-has-audio="false"
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></video>
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<div class="caption-layer" aria-hidden="true">
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<div id="caption-stage" class="safe-zone"></div>
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</div>
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</div>
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<script>
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var DURATION = 8;
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var SAFE_ZONE_WIDTH = 1400;
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var PILL_MAX_WIDTH = 1400;
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var PILL_MIN_PADDING_X = 30;
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var PILL_MAX_PADDING_X = 60;
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var FONT_WIDTH_SAFETY = 1.18;
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var FONT_FAMILY = "Poppins";
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var FONT_WEIGHT = "700";
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var BASE_FONT_SIZE = 72;
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var MIN_FONT_SIZE = 52;
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var MAX_WORDS_PER_GROUP = 4;
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var WORD_SPACING = 16;
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var PAUSE_THRESHOLD = 0.1;
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var GROUP_END_BUFFER = 0.3;
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var COLOR_INACTIVE = "#A6A6A6";
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var COLOR_ACTIVE = "#1C1E1D";
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var COLOR_FADE_DURATION = 0.1;
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var WORD_FADE_LEAD = 0.05;
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var TRANSCRIPT = [
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{ text: "Every", start: 0.0, end: 0.3 },
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{ text: "great", start: 0.3, end: 0.55 },
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{ text: "video", start: 0.55, end: 0.85 },
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{ text: "starts", start: 0.85, end: 1.1 },
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{ text: "with", start: 1.1, end: 1.25 },
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{ text: "a", start: 1.25, end: 1.35 },
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{ text: "single", start: 1.35, end: 1.65 },
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{ text: "frame.", start: 1.65, end: 2.0 },
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{ text: "HyperFrames", start: 2.1, end: 2.65 },
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{ text: "lets", start: 2.65, end: 2.85 },
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{ text: "you", start: 2.85, end: 2.95 },
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{ text: "write", start: 2.95, end: 3.15 },
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{ text: "HTML", start: 3.15, end: 3.55 },
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{ text: "and", start: 3.55, end: 3.65 },
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{ text: "render", start: 3.65, end: 3.95 },
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{ text: "professional", start: 3.95, end: 4.45 },
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{ text: "video.", start: 4.45, end: 4.8 },
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{ text: "No", start: 4.9, end: 5.05 },
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{ text: "timeline.", start: 5.05, end: 5.45 },
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{ text: "No", start: 5.5, end: 5.65 },
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{ text: "drag", start: 5.65, end: 5.85 },
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{ text: "and", start: 5.85, end: 5.95 },
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{ text: "drop.", start: 5.95, end: 6.25 },
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{ text: "Just", start: 6.35, end: 6.55 },
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{ text: "code", start: 6.55, end: 6.8 },
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{ text: "that", start: 6.8, end: 6.95 },
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{ text: "becomes", start: 6.95, end: 7.3 },
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{ text: "cinema.", start: 7.3, end: 7.7 },
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];
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function normalizeWords(rawWords) {
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return rawWords
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.map(function (item) {
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var text = String(item.word || item.text || "").trim();
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return {
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text: text,
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start: Math.max(0, Number(item.start) || 0),
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end: Math.min(DURATION, Math.max(Number(item.start) || 0, Number(item.end) || 0)),
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};
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})
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.filter(function (w) {
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return w.text.length > 0;
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});
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}
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var measureCanvas = document.createElement("canvas");
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var measureContext = measureCanvas.getContext("2d");
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function measureWordWidth(text, fontSize) {
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measureContext.font = FONT_WEIGHT + " " + fontSize + "px " + FONT_FAMILY;
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return measureContext.measureText(text).width * FONT_WIDTH_SAFETY;
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}
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function measureLineWidth(words, fontSize) {
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return words.reduce(function (total, word, index) {
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return (
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total + measureWordWidth(word.text.toLowerCase(), fontSize) + (index ? WORD_SPACING : 0)
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);
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}, 0);
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}
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function splitLinesForGroup(words, fontSize) {
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var maxLineWidth = PILL_MAX_WIDTH - PILL_MIN_PADDING_X * 2;
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if (
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words.some(function (w) {
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return measureWordWidth(w.text.toLowerCase(), fontSize) > maxLineWidth;
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})
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) {
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return null;
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}
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if (measureLineWidth(words, fontSize) <= maxLineWidth) return [words];
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var bestSplit = null;
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var bestImbalance = Infinity;
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for (var split = 1; split < words.length; split++) {
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var firstLine = words.slice(0, split);
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var secondLine = words.slice(split);
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var firstWidth = measureLineWidth(firstLine, fontSize);
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var secondWidth = measureLineWidth(secondLine, fontSize);
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if (firstWidth <= maxLineWidth && secondWidth <= maxLineWidth) {
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var imbalance = Math.abs(firstWidth - secondWidth);
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if (imbalance < bestImbalance) {
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bestSplit = [firstLine, secondLine];
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bestImbalance = imbalance;
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}
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}
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}
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return bestSplit;
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}
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function fitsInTwoLinesAtSize(words, fontSize) {
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return splitLinesForGroup(words, fontSize) !== null;
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}
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function planPillLayout(words, fontSize) {
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var lines = splitLinesForGroup(words, fontSize) || [words];
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var widestLine = lines.reduce(function (max, lineWords) {
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return Math.max(max, measureLineWidth(lineWords, fontSize));
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}, 0);
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var availablePadding = Math.floor((PILL_MAX_WIDTH - widestLine) / 2);
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var padX = Math.max(PILL_MIN_PADDING_X, Math.min(PILL_MAX_PADDING_X, availablePadding));
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var pillWidth = Math.min(PILL_MAX_WIDTH, Math.ceil(widestLine + padX * 2));
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return { lines: lines, padX: padX, pillWidth: pillWidth };
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}
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function makeGroups(words) {
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var groups = [];
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var current = [];
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words.forEach(function (word, index) {
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var testGroup = current.concat([word]);
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var nextWord = words[index + 1];
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var wouldExceedMaxWords = testGroup.length > MAX_WORDS_PER_GROUP;
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var wouldExceedTwoLines = !fitsInTwoLinesAtSize(testGroup, BASE_FONT_SIZE);
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if (wouldExceedMaxWords || wouldExceedTwoLines) {
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if (current.length) {
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groups.push({
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words: current.slice(),
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start: current[0].start,
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end: current[current.length - 1].end,
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});
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}
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current = [word];
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return;
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}
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current.push(word);
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var hasPunctuation = /[,.:!?]$/.test(word.text);
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var pauseDuration = nextWord ? nextWord.start - word.end : 0;
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var hasNaturalPause = pauseDuration >= PAUSE_THRESHOLD;
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var maxWordsReached = current.length >= MAX_WORDS_PER_GROUP;
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if (maxWordsReached || !nextWord || hasPunctuation || hasNaturalPause) {
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groups.push({
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words: current.slice(),
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start: current[0].start,
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end: current[current.length - 1].end,
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});
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current = [];
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}
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});
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if (current.length)
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groups.push({
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words: current.slice(),
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start: current[0].start,
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end: current[current.length - 1].end,
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});
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return groups;
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}
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function fontSizeForGroup(words) {
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var size = BASE_FONT_SIZE;
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while (size > MIN_FONT_SIZE && !fitsInTwoLinesAtSize(words, size)) {
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size -= 2;
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}
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return size;
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}
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function buildCaptions(groups) {
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var stage = document.getElementById("caption-stage");
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groups.forEach(function (group, groupIndex) {
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var groupEl = document.createElement("div");
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var pillEl = document.createElement("div");
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var copyEl = document.createElement("div");
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var fontSize = fontSizeForGroup(group.words);
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groupEl.id = "caption-group-" + groupIndex;
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groupEl.className = "caption-group";
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pillEl.className = "caption-pill";
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copyEl.className = "caption-copy";
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copyEl.style.fontSize = fontSize + "px";
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var indexedWords = group.words.map(function (word, wordIndex) {
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return { text: word.text, start: word.start, end: word.end, wordIndex: wordIndex };
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});
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var layout = planPillLayout(indexedWords, fontSize);
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pillEl.style.width = layout.pillWidth + "px";
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pillEl.style.paddingLeft = layout.padX + "px";
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pillEl.style.paddingRight = layout.padX + "px";
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layout.lines.slice(0, 2).forEach(function (lineWords) {
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var lineEl = document.createElement("div");
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lineEl.className = "caption-line";
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lineWords.forEach(function (word) {
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var wordEl = document.createElement("span");
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wordEl.id = "caption-word-" + groupIndex + "-" + word.wordIndex;
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wordEl.className = "caption-word";
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wordEl.textContent = word.text.toLowerCase();
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lineEl.appendChild(wordEl);
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});
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copyEl.appendChild(lineEl);
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});
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pillEl.appendChild(copyEl);
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groupEl.appendChild(pillEl);
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stage.appendChild(groupEl);
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});
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}
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var WORDS = normalizeWords(TRANSCRIPT);
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var GROUPS = makeGroups(WORDS);
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buildCaptions(GROUPS);
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window.__timelines = window.__timelines || {};
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var tl = gsap.timeline({ paused: true });
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GROUPS.forEach(function (group, groupIndex) {
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var groupEl = document.getElementById("caption-group-" + groupIndex);
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var nextGroup = GROUPS[groupIndex + 1];
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var isLastGroup = groupIndex === GROUPS.length - 1;
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var effectiveEnd = isLastGroup
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? DURATION
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: Math.min(nextGroup.start, group.end + GROUP_END_BUFFER);
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var visibleStart = Math.max(0, group.start);
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var visibleEnd = Math.max(visibleStart + 0.01, effectiveEnd);
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tl.set(groupEl, { opacity: 1 }, visibleStart);
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tl.set(groupEl, { opacity: 0 }, visibleEnd);
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group.words.forEach(function (word, wordIndex) {
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var wordEl = document.getElementById("caption-word-" + groupIndex + "-" + wordIndex);
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var isFirstWord = wordIndex === 0;
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var wordStart = Math.max(visibleStart, word.start - WORD_FADE_LEAD);
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tl.set(wordEl, { color: isFirstWord ? COLOR_ACTIVE : COLOR_INACTIVE }, visibleStart);
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if (isFirstWord) return;
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tl.to(
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wordEl,
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{ color: COLOR_ACTIVE, duration: COLOR_FADE_DURATION, ease: "none" },
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wordStart,
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);
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});
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});
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window.__timelines["caption-pill-karaoke"] = tl;
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</script>
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</body>
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</html>
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